Brake-beam.



H. ZIEMSS, JR.

BRAKE BEAM.

APPLICATION FILED 00121, 1908.

' 1,036,052, Patented Aug.20, 1912.

2 SHEETS-SHEET 1.

H. ZIEMSS, JR. BRAKE BEAM.

APPLICATION FILED OCT. 21, 190B.

Patented Aug. 20, 1912.

2 SHEETS-SHEET 2.

onrrnn srATEs PATENT OFFICE.

HENRY ZIEMSS, JR., OF CHICAGO, ILLINOIS, ASSIGNORIEO CHICAGO RAILWAY EQUIP- MENT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BRAKE-BEAM.

Specification of Letters Patent. Patented Aug. 20, 1912.

Application filed October 21, 1908. SerialNo. 458,804.

To all whom it may concern:

Be it known that I, HENRY ZIEMss, Jr., a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Brake-Beams, of which the following is a specification.

This invention relates to the brake beams of railway brakes.

One of the objects of this invention is to provide means for securing the compression member and the tension member together so that the brake-head-supporting sleeves may be removed from the ends of the beam without dismembering the latter.

Another object of the invention is to provide improved means for rotatably supporting the strut or post of a brake beam.

A further object is to provide improved means for adjustably securing the brake head upon the sleeve.

In the accompanying drawings Figure l is a horizontal sectional viewthrough one end of a brake beam embodying the features of my invention. Said view is taken upon the plane of dotted line 1 1 of Fig. 2, which latter view is a vertical section on line 2 2 of Fig. 1. Fig. 3 is a view taken from the left-hand side of Fig. 2. Fig. 4 is an inner end view of one of the sleeves. Figs. 5, 6 and 7 are fragmental detail views of the means for rotatably supporting the fulcrum, Fig. 6 being taken upon the plane of dotted line 6 6 of Fig. 5.

A brake beam embodying my invention may comprise a compression member 1, preferably possessing more or less camber, and a tension member 2, the ends of said tension member being screw-threaded and the ends of the compression member being chamfered upon a plane extending substantially at right angles with the adjacent end portions of the tension member, to provide seats for nuts 3 turned upon the threaded ends of the tension member. A sleeve 4 is adapted to be slipped over the ends of the tension member and the compression member, said sleeve being recessed as at 5 to fit over the compression member and provided with a concave seat6 for the tension member 2- and recessed as at 7 to accommodate the nut 8 when the sleeve is being placed over the ends of the parts 1 and 2. In the outer end wall 8 of the sleeve 4 is an opening 9 to receive the end of the tension member 2. Preferably the inner side of the end wall 8 lies against the nut 3. The sleeve 4 is secured in. place by means of a nut 10.turned upon the screw-threaded end of the tension member 2 and bearing against the end wall 8 of said sleeve.

It will be seen that upon theremoval of the nut 10, the sleeve may be slipped off the endof the beam members 1 and 2 without causing a separation of said beam members, the nut 3 holding the latter in proper relationship. 1

The compression member 1 and the tension ,member 2 being under great tension, much difliculty is experienced in practice in adjusting the struts of adjustable fulcrum beams. I have provided means for relieving more or less of the pressure upon the strut throughout the greater part of theadjusting movement, whichmeans will now be described.

The strut 11, which may be of any suitable construction, is rotatably supported at itsends by members 12 and 13 fixed to the compression member 1 and the tension member 2, respectively. The member 12 comprises a disk 14 provided at its center with a tubular pivot stud15. The strut 11 has at one end a disk 16 adapted to contact the disk 14, the stud 15 extending through an opening 17 in said disk 16. Any suitable means, such as a rivet'l8, may be used to connect the parts 11 and 12.

The contacting faces of the disks 14 and 16 are provided with radial ribs 19 which are somewhat narrow relatively to the concave spaces between said ribs. When the ribs on the disk 16 are moved out of contact with the ribs on the disk 14, the pressure upon the strut is decreased and said strut may be turned with comparative ease. By reason of the narrowness of said ribs, most of the turning movement takes place under lessened pressure.

I have herein shown the strut arranged to assume a position wherein the operating stem or post is vertical, as well as positions wherein said post is inclined 40 to the right and the left.

If it be desired to secure the strut'in adjusted position, any preferred meansmay be employed for this purpose, such as perforated lugs 20 on the stationary disk 14 adapted to receive a cotter pin 21 or equiva lent device passing through a similar lug 22 on the rotatable disk 16. In the present embodiment, the ribs 19 on said disks are in contact when 'thestrutis in adjusted posi tion. Y i i If desired, means may be used to limit theoscillatory movements of the strut, as, for example, projecting: stops23 on the station'- ary disk 14 arranged to be engaged by a suitable stop on the disk 16, such as'the lug 22. I

The e'nd of the'stl-t'ttll oppo'site to the end '16 is rotatably supported in any '--suit-' able Way for instance, by means of a -s'tud- 24' 0n said 'fl'llcru m lying within a bearing 1 opening inthemember13;

be thicken'ed *or reinforced as at 31 and said may be reduced inthickness between its edges, as shown'at 32 in Figsa 1 and 2; The angular -end'"-of the cla'mping ari'nl may be strengthened by ribs -83;

The inner concave face of the spring clamping arm 28" may be speciallyadapted to engagethe sle'e've 4, as,-;fer example, by formingribs or teeth 34"0n said ar'm ada'pt-' eel-to engage similar teeth 35 up'o'n the sleeve. The brake-head may be yieldingly' held ag'ainst rotation upon the sleeve '4 by the'pressure 'of the spring'clampingi-arm 28. If it "be desired to place additional te'nsion upon said arm, suitable'means-may be pro* vided, such'as a coiledspring 36 lying-between'the'web 30 and a Washer 37; Thete'nsion of the spring 'n'iaybetransmitted to the spring arm 28 *tl'iroughi means such as a bolt 38, ag' ainst"the headofw hich -th'e washer 37 bears, said bolt "extending through openings'in the web8O and the angular end 29 and being screw-threaded "to receive a nut"39by which the tension of "thespring maybe adjusted; The washer" 37 is pro vided vvith" diametrically opposite lugs" 40 that'li'e-within recesses 41 in the v'vebs'42 of the brake head. If it "be desired to'lock' the brake head rigidly upon the beam, the nut 39*may; be' rotated"to-compress the spring '36 until the'lugstO of the Washer 37 engage-thebuter end walls of the: recesses 41. 1 The clamping 'ar'm 28 will -then=' be 1111 able toyield to permit relative"movement of thebrake head. Thebolt38is held'from rotation by lugs -44"on the washer "37.

If"desired, the angular end 29 of the spring clamping member 28 maybe con nected to the Web 30: by means of the-spring: portion 3O;

The brake head, in the present embodiment, is-locked against Withdrawal from the beam by meansof a-lug.,45'upon the inner Wall of the hub 26, said lug extending into an arcuate groove 46 in the sleeve 4. One

or both ends of the groove 46 are connected with the outer end of the sleeve 4 by means of transverse grooves 47 in said sleeve. After-thebrake'head has been turned until the lug is in alinement with one or the other of the grooves 47, said head maybe removed by sliding it longitudinally of the sleeve.

It-will be observed that the ends ofthe hub 26' are not vveakenedby the formation of slotstherein' and that the side webs or fianges421ofthe-head connect With the ends of the=hubto form astrong,rigid structure.

In Fig. 2 the brake head is represented as yieldingly mounted upon the beam, the arm 28 being arranged-to :yield to permit'the brake-l shoe 'toadjust 1 itself to the. wheel The 'brake" head maybe rigidly locked to the beamwby rotating'the nut 39 until the lugs 40 of the Washer 37 are drawn: against the "outer =end walls 1 of the recesses 41.

The lugr45 holds the :brake :head against displacement from-the beam; Ifmlesi-re'd, a cotter pin =48 -may be passed through the outer end=rof the sleeve' 4 to serve as an additional or safety meanstoprevent displace ment'of the h'eadu I would have it understood that 1 desire not to be limited to the details herein desoribedy for various modificationswill occur to thosewskilled in the art. Certain features of :the: brake: beam herein shown-and describ'ed'are claimed in the companion application. filed by me Febr uary 12,1912, Serial No.'=677,03'5.

1 'claimnas myiinventionz 1. 'A'brake beam comprising asstrut; and means for rotatably supporting said strut comprising two contacting parts, the contacting-faces of said parts having a plurality of complementary' high and low portions,- thegeneral plane of said'faces being at right angles tothe axis of said strut,

2;- A brake beam co'mprising a strut; and means for rotatably-supporti ngsaid' strut comprising twocontacting parts, I the contaotingi'faces of said parts having'radial ribs,- the ribs 'uponone of said parts being! adapted' to lie upon-"andbetween the ribsupon thenther part;

3. A brake beanr comprising a strut; means for rotatably supportingsaid strut comprising a memb'er fix'ed to said strut; a stationary member "and means for connecting "said members to rotate in contact with each other, the contacting faces of saidparts having'complementary high and low portions.

4." A*' brake beam comprising" a strut; means for 1 'rotatably supporting one end of said strut; a disk attached to the other end of said strut; a member having a disk adapted to contact the first mentioned disk, the contacting faces of said disks being radially ribbed; and a pivot extending through and connecting said disks.

A brake beam comprising a strut; means for rotatably supporting said strut, said strut having three operative positions; and means for relieving pressure upon said strut in rotating the latter from one operative position to another, said strut being under pressure when in operative position.

6. A brake head having a hub, said hub having two slots therein extending part way around the hub to provide a clampingarm.

7. A brake head having a hub, a portion of one wall of said hub constituting a clamping arm, said arm being narrower than said hub.

8. A brake head having a hub, a portion of one wall of said hub constituting a clamping arm, both ends of said arm being connected to said hub.

9. A brake head having a hub, and a clamping arm extending part way around the hub, both ends of said arm being integrally connected with the hub.

10. A brake head having a hub; a clamping-arm extending part way around the hub; a spring; a web on said hub forming a seat for said spring; means connecting the other end of said spring with one end of said clamping-arm, said end of said clamping-arm being connected with said web, and the other end of said clamping-arm being connected with the hub.

11. A rigid brake head having a hub; a

clamping-arm at one side of said hub and between the ends thereof; and webs at the sides of said head and connected with the ends of said hub.

12. A brake head having a clamping-arm; a spring bearing at one end against the brake head; a member upon which the other end of said spring is arranged to bear; stop means moving with said spring; stop means on the head; means for bringing the first mentioned stop means into engagement with the stop means on the brake head, said clamping-arm being operatively connected with the first mentioned member and being unyieldingly held against movement in one direction when said stop means are in engagement with each other.

13. A brake head having a hub; a clamping-arm at one side of said hub; a spring bearing at one end against the brake head; a bolt upon which the other end of said spring is arranged to bear; stop means moving with the spring; stop means on the head; a nut on said bolt, relative rotation between said nut and said bolt being arranged to bring the first mentioned stop means into engagement with the stop means on the brake head, said clamping-arm being operatively connected with said bolt and being unyieldingly held against movement in one direction when said stop means are in engagement with each other.

14. A brake head having a hub, said hub having two slots therein extending longitudinally of the brake head, the portion of the hub between said slots forming a spring clamping arm.

15. A brake head having a hub, said hub having two slots therein extending longitudinally of the brake head, the portion of the hub between said slots constituting a clamping arm, both. ends of said arm being connected to the hub.

16. A brake head having a hub, said hub having two slots therein extending longitudinally of the brake head, the portion of the hub between said slots constituting a clamping arm, and means for exerting pres-- sure upon one end of said arm.

17 A brake head having a hub; a clamping arm extending part way around the hub, said arm having an angular end; a pro ecting portion on the hub adjacent to said angular end; and a curved part extending between said angular end and said projecting portion.

18. A brake head having a hub; a clamping arm extending part way around the hub, said arm having an angular end; a project ing portion on the hub adjacent to said an gular end; and a curved portion integral with and connecting said angular end and said projecting portion.

19. A brake beam comprising a compres sion member; a tension member; a disk attached to one of said members; and a strut having a pivotal connection at its ends with the other member and with said disk, said disk and the adjacent portion of the strut being in contact and having complementary high and low portions.

20. A brake-beam comprising a compression member, a tension member, said compression member having a face at right angles to said tension member, a nut threaded on the end of said tension member and bearing against said face, a sleeve fitting upon the ends of said members and inclosing said nut, and means for securing said sleeve in place.

21. A brake beam comprising a compression member, a tension member, said compression member having a face at one end at right angles with said tension member, a nut threaded on the end of said tension member and bearing against said face, a sleeve fitting upon the ends of said members and having an apertured end wall through which the end of said tension member pro. jects, said end wall bearing against said nut, and a second nut threaded on the end. of said tension member and bearing against the outer side of said end Wall for holding said sleeve in place.

22. A. brake-beam comprising a compres' sion member, a tension member, a rotatable strut, and a portion carried by one of said members and contacting one end of said strut, the contacting faces of said portion and said strut having complementary high and low portions.

23. A brake head comprising a hub slotted part way about its periphery to provide an integral spring clamping arm, and means for moving saidarm.

24. In a brake beam, the combination of a sleeve having a corrugated periphery, a brake head fitting on said sleeve, sald head being slotted part Way about its circumference to form a spring clamping arm, said arm having corrugations on its inner side adapted-to engage the corrugations on said sleeve, and means for moving said arm.-

25. In a brake beam, a rotatable strut having bearings in the beam and having two operative positions and means in said bearings for holding said strut under pressure When in operative position, and for relieving said pressure as the strut moves out of operative position.

HENRY ZIEMSS, JR.

Vitnesses:

MATILDA M. DALEY, I GEORGE L. CHINDAHL.

copies of thispatent may be obtained for five cents each, by addressing the Commissioner 01 Patents, Washington, D; C? 

